DayStar Technologies Inc., a developer of solar cells, has received a letter of reprimand from the Listing Qualifications Department of the Nasdaq Stock Market.

The Listing Qualifications Department determined that DayStar inadvertently failed to comply with marketplace rules. DayStar officials said it was unclear to them that marketplace rules were violated when John Tuttle, DayStar's chairman, president and CEO was appointed to committees on the company's board of directors.

DayStar (Nasdaq: DSTI) said the Listing Qualifications Department determined that the failures did not appear to have been deliberate, that the Halfmoon company promptly cured the non-compliance and that there is no pattern of non-compliance. The Listing Qualifications Department considered the letter of reprimand the appropriate action to close the matter. DayStar is currently in compliance with each of these marketplace rules, the company said.